The mini-heatwave has ended in thunder and heavy rain. The thunder went on all night and is still rumbling at a distance. In the middle of the storm I had a dream in which I was launching a missile in retaliation. The setting was a boarding school, the missile was set up on a stone staircase and I was having difficulty keeping the schoolboys from standing too close to it. There was a smoke blackened hole in the roof through which an earlier missile had been fired.